Question

in which orbitals would the valence electrons for selenium (se) be placed?
o s orbital and f orbital
o s orbital only
o s orbital and p orbital
o d orbital only

Explanation:

Selenium has an atomic number of 34. Its electron - configuration shows that the valence electrons are in the 4s and 4p orbitals. The outermost shell electrons are considered valence electrons, and for selenium, they occupy s and p orbitals.

Answer:

s orbital and p orbital